Thanks again, learned more. Regarding your first code post where Main( @ARGV ); is used for providing multiple xml files on command line, is the most practical way of placing output from each file into a separate hash by duplicating "for my $file" and specify $_[0], $_1, etc. 
   for my $file( $_[0] ){
        # dd
        $filename = $file; ##
        
        eval {
            $twig->parsefile( $file );
            1;
        } or warn "ERROR parsefile($file): $@ ";
   }

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In reply to Re^6: XML::Twig traversing tree and storing in an array by jccunning
in thread XML::Twig traversing tree and storing in an array by jccunning

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